Does mounting external media read only make ejecting the media unnessesary? If so, how to mount all external media read only?
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I am building hardware solutions for video debriefing purposes, where users will connect and remove cameras and/or SD cards to computers all the time.
I am working with Raspberry pi's (Raspbian) for media playback.
A fast media server for video related calculations and media conversion (Ubuntu) and a fast NAS for storage.
I like to overcome the need for the user to ejecting media before removing the hardware, because I know from experience nobody will take the effort anyway. I have no need for my system to write data onto the users devices. So I was wondering if there is a way to mount all external devices always read-only in order to prevent any data corruption on unsafe removal.
I am fairly new to Linux and programming. The software I am writing is mainly Python, but I am looking for a more system wide approach for this problem so the user will not experience any
linux readonly removable-storage
asked Feb 17 at 13:52
Willem de Groot
61
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up vote
1
down vote
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I am building hardware solutions for video debriefing purposes, where users will connect and remove cameras and/or SD cards to computers all the time.
I am working with Raspberry pi's (Raspbian) for media playback.
A fast media server for video related calculations and media conversion (Ubuntu) and a fast NAS for storage.
I like to overcome the need for the user to ejecting media before removing the hardware, because I know from experience nobody will take the effort anyway. I have no need for my system to write data onto the users devices. So I was wondering if there is a way to mount all external devices always read-only in order to prevent any data corruption on unsafe removal.
I am fairly new to Linux and programming. The software I am writing is mainly Python, but I am looking for a more system wide approach for this problem so the user will not experience any
linux readonly removable-storage
asked Feb 17 at 13:52
Willem de Groot
61
I know what ‘video debriefing’ means wink
– user2497
Feb 17 at 21:29
add a comment |Â
up vote
1
down vote
favorite
up vote
1
down vote
favorite
I am building hardware solutions for video debriefing purposes, where users will connect and remove cameras and/or SD cards to computers all the time.
I am working with Raspberry pi's (Raspbian) for media playback.
A fast media server for video related calculations and media conversion (Ubuntu) and a fast NAS for storage.
I like to overcome the need for the user to ejecting media before removing the hardware, because I know from experience nobody will take the effort anyway. I have no need for my system to write data onto the users devices. So I was wondering if there is a way to mount all external devices always read-only in order to prevent any data corruption on unsafe removal.
I am fairly new to Linux and programming. The software I am writing is mainly Python, but I am looking for a more system wide approach for this problem so the user will not experience any
linux readonly removable-storage
asked Feb 17 at 13:52
Willem de Groot
61
I am building hardware solutions for video debriefing purposes, where users will connect and remove cameras and/or SD cards to computers all the time.
I am working with Raspberry pi's (Raspbian) for media playback.
A fast media server for video related calculations and media conversion (Ubuntu) and a fast NAS for storage.
I like to overcome the need for the user to ejecting media before removing the hardware, because I know from experience nobody will take the effort anyway. I have no need for my system to write data onto the users devices. So I was wondering if there is a way to mount all external devices always read-only in order to prevent any data corruption on unsafe removal.
I am fairly new to Linux and programming. The software I am writing is mainly Python, but I am looking for a more system wide approach for this problem so the user will not experience any
linux readonly removable-storage
asked Feb 17 at 13:52
Willem de Groot
61
asked Feb 17 at 13:52
Willem de Groot
61
asked Feb 17 at 13:52
Willem de Groot
61
asked Feb 17 at 13:52
Willem de Groot
61
61
I know what ‘video debriefing’ means wink
– user2497
Feb 17 at 21:29
add a comment |Â
I know what ‘video debriefing’ means wink
– user2497
Feb 17 at 21:29
I know what ‘video debriefing’ means wink
– user2497
Feb 17 at 21:29
I know what ‘video debriefing’ means wink
– user2497
Feb 17 at 21:29
add a comment |Â
1 Answer
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up vote
1
down vote
It's always recommended to umount properly any media , a file can still be opened for example
You can force media to mount read only with mount command options dedicated to options
mount -o ro /dev/media /example/path
you can use udev rules to force this option to any external media ... see this post to know how to How can I create a udev rule to mount a USB drive read only?
answered Feb 17 at 13:59
francois P
914114
Thanks for your quick response! Do you know if mounting read only really means the data on the mounted drive is not touched in any way? or can a file still become corrupt if its opened while a the drive is removed?
– Willem de Groot
Feb 17 at 14:50
risk is nearly zero ...
– francois P
Feb 17 at 14:57
1
Data on the external media should stay untouched. But the running system can become unstable after that, especially if you're disconnecting a (spinning) disk.
– SatÅ Katsura
Feb 17 at 15:01
@SatÃ…ÂKatsura No it can’t. Never happens. And besides rpi up to revision 2 can’t source enough current to drive a magnetic disk. GNU/Linux is famous for ignoring conditions that would make a sane operating system panic (...and so is Linus Torvalds, but that’s off-topic)
– user2497
Feb 17 at 21:27
add a comment |Â
1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
up vote
1
down vote
It's always recommended to umount properly any media , a file can still be opened for example
You can force media to mount read only with mount command options dedicated to options
mount -o ro /dev/media /example/path
you can use udev rules to force this option to any external media ... see this post to know how to How can I create a udev rule to mount a USB drive read only?
answered Feb 17 at 13:59
francois P
914114
Thanks for your quick response! Do you know if mounting read only really means the data on the mounted drive is not touched in any way? or can a file still become corrupt if its opened while a the drive is removed?
– Willem de Groot
Feb 17 at 14:50
risk is nearly zero ...
– francois P
Feb 17 at 14:57
1
Data on the external media should stay untouched. But the running system can become unstable after that, especially if you're disconnecting a (spinning) disk.
– SatÅ Katsura
Feb 17 at 15:01
@SatÃ…ÂKatsura No it can’t. Never happens. And besides rpi up to revision 2 can’t source enough current to drive a magnetic disk. GNU/Linux is famous for ignoring conditions that would make a sane operating system panic (...and so is Linus Torvalds, but that’s off-topic)
– user2497
Feb 17 at 21:27
add a comment |Â
up vote
1
down vote
It's always recommended to umount properly any media , a file can still be opened for example
You can force media to mount read only with mount command options dedicated to options
mount -o ro /dev/media /example/path
you can use udev rules to force this option to any external media ... see this post to know how to How can I create a udev rule to mount a USB drive read only?
answered Feb 17 at 13:59
francois P
914114
Thanks for your quick response! Do you know if mounting read only really means the data on the mounted drive is not touched in any way? or can a file still become corrupt if its opened while a the drive is removed?
– Willem de Groot
Feb 17 at 14:50
risk is nearly zero ...
– francois P
Feb 17 at 14:57
1
Data on the external media should stay untouched. But the running system can become unstable after that, especially if you're disconnecting a (spinning) disk.
– SatÅ Katsura
Feb 17 at 15:01
@SatÃ…ÂKatsura No it can’t. Never happens. And besides rpi up to revision 2 can’t source enough current to drive a magnetic disk. GNU/Linux is famous for ignoring conditions that would make a sane operating system panic (...and so is Linus Torvalds, but that’s off-topic)
– user2497
Feb 17 at 21:27
add a comment |Â
up vote
1
down vote
up vote
1
down vote
It's always recommended to umount properly any media , a file can still be opened for example
You can force media to mount read only with mount command options dedicated to options
mount -o ro /dev/media /example/path
you can use udev rules to force this option to any external media ... see this post to know how to How can I create a udev rule to mount a USB drive read only?
answered Feb 17 at 13:59
francois P
914114
It's always recommended to umount properly any media , a file can still be opened for example
You can force media to mount read only with mount command options dedicated to options
mount -o ro /dev/media /example/path
you can use udev rules to force this option to any external media ... see this post to know how to How can I create a udev rule to mount a USB drive read only?
answered Feb 17 at 13:59
francois P
914114
answered Feb 17 at 13:59
francois P
914114
answered Feb 17 at 13:59
francois P
914114
answered Feb 17 at 13:59
francois P
914114
914114
Thanks for your quick response! Do you know if mounting read only really means the data on the mounted drive is not touched in any way? or can a file still become corrupt if its opened while a the drive is removed?
– Willem de Groot
Feb 17 at 14:50
risk is nearly zero ...
– francois P
Feb 17 at 14:57
1
Data on the external media should stay untouched. But the running system can become unstable after that, especially if you're disconnecting a (spinning) disk.
– SatÅ Katsura
Feb 17 at 15:01
@SatÃ…ÂKatsura No it can’t. Never happens. And besides rpi up to revision 2 can’t source enough current to drive a magnetic disk. GNU/Linux is famous for ignoring conditions that would make a sane operating system panic (...and so is Linus Torvalds, but that’s off-topic)
– user2497
Feb 17 at 21:27
add a comment |Â
Thanks for your quick response! Do you know if mounting read only really means the data on the mounted drive is not touched in any way? or can a file still become corrupt if its opened while a the drive is removed?
– Willem de Groot
Feb 17 at 14:50
risk is nearly zero ...
– francois P
Feb 17 at 14:57
1
Data on the external media should stay untouched. But the running system can become unstable after that, especially if you're disconnecting a (spinning) disk.
– SatÅ Katsura
Feb 17 at 15:01
@SatÃ…ÂKatsura No it can’t. Never happens. And besides rpi up to revision 2 can’t source enough current to drive a magnetic disk. GNU/Linux is famous for ignoring conditions that would make a sane operating system panic (...and so is Linus Torvalds, but that’s off-topic)
– user2497
Feb 17 at 21:27
Thanks for your quick response! Do you know if mounting read only really means the data on the mounted drive is not touched in any way? or can a file still become corrupt if its opened while a the drive is removed?
– Willem de Groot
Feb 17 at 14:50
Thanks for your quick response! Do you know if mounting read only really means the data on the mounted drive is not touched in any way? or can a file still become corrupt if its opened while a the drive is removed?
– Willem de Groot
Feb 17 at 14:50
risk is nearly zero ...
– francois P
Feb 17 at 14:57
risk is nearly zero ...
– francois P
Feb 17 at 14:57
1
1
Data on the external media should stay untouched. But the running system can become unstable after that, especially if you're disconnecting a (spinning) disk.
– SatÅ Katsura
Feb 17 at 15:01
Data on the external media should stay untouched. But the running system can become unstable after that, especially if you're disconnecting a (spinning) disk.
– SatÅ Katsura
Feb 17 at 15:01
@SatÃ…ÂKatsura No it can’t. Never happens. And besides rpi up to revision 2 can’t source enough current to drive a magnetic disk. GNU/Linux is famous for ignoring conditions that would make a sane operating system panic (...and so is Linus Torvalds, but that’s off-topic)
– user2497
Feb 17 at 21:27
@SatÃ…ÂKatsura No it can’t. Never happens. And besides rpi up to revision 2 can’t source enough current to drive a magnetic disk. GNU/Linux is famous for ignoring conditions that would make a sane operating system panic (...and so is Linus Torvalds, but that’s off-topic)
– user2497
Feb 17 at 21:27
add a comment |Â
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I know what ‘video debriefing’ means wink
– user2497
Feb 17 at 21:29